| Geyser | 1968-06-23 |
|---|---|
| Cistern Spring | 0800 |
| Ebony | 0820 min, 0930 ?, 1128 |
| Echinus | 0827, 0927, 1045, 1326, 1400, 1534, 1617 |
| Fan-Norris | 1132, 1406, 1635 |
| Steamboat | 0800 |
| Values for Old Faithful Area | 1968-06-23 |
|---|---|
| Astronomical Twilight Begin | 03:10 |
| Nautical Twilight Begin | 04:13 |
| Civil Twilight Begin | 05:02 |
| Sunrise | 05:39 |
| Sunset | 21:11 |
| Civil Twilight End | 21:48 |
| Nautical Twilight End | 22:37 |
| Astronomical Twilight End | 23:40 |
| Moon Illumination | 6.51% |